D) All of the above
Explanation:
Genetic engineering "allow scientists to create their own mutations in the organisms" by "manipulating the genetic code in attempt to improve a species" which is virtually the same as"altering genetic material".
The answer is B, cellular function
Answer:
The correct answer is a. hydrogen bonds between the amino group of one peptide bond and the carboxyl group of another peptide bond.
Explanation:
The secondary structure of proteins are formed by α-helices and β-structures, that can be supported by hydrogen bonds between amine hydrogens and another peptide bond.
Answer:
An endoskeleton provides better structual support and can withstand physical force better than exoskeleton.